Publikationen
Neutron spectroscopy of Mg-26 states
- Autor(en)
- C. Massimi, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, S. Bisterzo, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, D. M. Castelluccio, F. Cerutti, E. Chiaveri, L. Cosentino, M. Chin, G. Clai, N. Colonna, G. Cortes, M. A. Cortes-Giraldo, S. Cristallo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, C. Eleftheriadis, A. Ferrari, P. Finocchiaro, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, I. F. Goncalves, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, A. Hernandez-Prieton, D. G. Jenkins, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karadimos, N. Kivel, P. Koehler, M. Kokkoris, S. Kopecky, M. Krticka, J. Kroll, C. Lampoudis, C. Langer, E. Leal-Cidoncha, C. Lederer, H. Leeb, L. S. Leong, S. Lo Meo, R. Losito, A. Mallick, A. Manousos, J. Marganiec, T. Martinez, P. F. Mastinu, M. Mastromarco, E. Mendoza, A. Mengoni, P. M. Milazzo, F. Mingrone, M. Mirea, W. Mondelaers, A. Musumarra, C. Paradela, A. Pavlik, J. Perkowski, M. Pignatari, L. Piersanti, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifarth, A. Riego, M. S. Robles, C. Rubbia, M. Sabate-Gilarte, R. Sarmento, A. Saxena, P. Schillebeeckx, S. Schmidt, D. Schumann, G. Tagliente, J. L. Tain, D. Tarrio, L. Tassan-Got, A. Tsinganis, S. Valenta, G. Vannini, I. Van Rijs, V. Variale, P. Vaz, A. Ventura, M. J. Vermeulen, V. Vlachoudis, R. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Weiss, R. Wynants, T. Wright, P. Zugec
- Abstrakt
This work reports on accurate, high-resolution measurements of the Mg-25(n, gamma)Mg-26 and Mg-25(n, tot) cross sections in the neutron energy range from thermal to about 300 keV, leading to a significantly improved Mg-25(n, gamma)Mg-26 parametrization. The relevant resonances for n+Mg-25 were characterized from a combined R-matrix analysis of the experimental data. This resulted in an unambiguous spin/parity assignment of the corresponding excited states in Mg-26. With this information experimental upper limits of the reaction rates for Ne-22(alpha, n)Mg-25 and Ne-22(alpha, gamma)Mg-26 were established, potentially leading to a significantly higher (alpha, n)/(alpha, gamma) ratio than previously evaluated. The impact of these results has been studied for stellar models in the mass range 2 to 25 M-circle dot. (C) 2017 The Author(s). Published by Elsevier B.V.
- Organisation(en)
- Isotopenphysik
- Externe Organisation(en)
- Johann Wolfgang Goethe-Universität Frankfurt am Main, Istituto Nazionale di Fisica Nucleare, Roma, University of Lodz, Université Paris-Saclay, Université Paris XI - Paris-Sud, Centro de Investigaciones Energeticas Medioambientales y Tecnológica, Charles University Prague, French Atomic Energy Commission (CEA), University of Manchester, European Organization for Nuclear Research (CERN)
- Journal
- Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
- Band
- 768
- Seiten
- 1-6
- Anzahl der Seiten
- 6
- ISSN
- 0370-2693
- DOI
- https://doi.org/10.1016/j.physletb.2017.02.025
- Publikationsdatum
- 05-2017
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103014 Kernphysik
- Schlagwörter
- Link zum Portal
- https://ucris.univie.ac.at/portal/de/publications/neutron-spectroscopy-of-mg26-states(49a58558-ceb0-461d-ad4b-7b336c3be37a).html